Water, water hardly anywhere. Water crises are rocking two of the world's largest cities as Mexico City starts a 36-hour water cutoff and Los Angeles is in the midst of a water dearth.
The problem, however, is far wider than two of the most populous cities in the Western Hemisphere. Beijing, the capital of China, has a serious water shortage. The Israelis and the Palestinians are at loggerheads over control of the key aquifers west of the River Jordan that are vital to sustain both peoples. An unprecedented world population of 6.8 billion people -- more than three times that of 80 years ago -- and the inexorable reality of global climate change are guaranteed to make the long-term crisis worse.
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